<div>
    Takes a filename in the workspace and runs it as Groovy source text.
    <p>
        The loaded file can contain statements at top level or just load and run a closure. For example:
    </p>
    <pre>
    def pipeline
    node('agent') {
        pipeline = load 'pipeline.groovy'
        pipeline.functionA()
    }
    pipeline.functionB()
    </pre>
    <p>
    Where <code>pipeline.groovy</code> defines functionA and functionB functions (among others) before ending with <code>return this;</code>
    <p>
</div>
